Kutopa kogwira mtima kwa chigawo chakunja chozungulira ndi mpando ndi zotsatira za kusinthasintha kosinthasintha pa dzina logwira ntchito, ndipo kuyaka kwakuya ndi chifukwa chamkati cha kutopa kogwira mtima.Zimbalangondo zozungulira zozungulira zimalumikizidwa ndi mayendedwe ozungulira ngati ng'oma pakati pa mphete yamkati yokhala ndi njira ziwiri zojambulira ndi mphete yakunja yokhala ndi mipikisano yozungulira.Zozungulira zozungulira zimakhala ndi mizere iwiri yodzigudubuza, yomwe imakhala ndi katundu wambiri, komanso imatha kunyamula katundu wa axial kumbali iliyonse.Ndi mphamvu yonyamula ma radial yayikulu, ndiyoyenera kwambiri kugwira ntchito pansi pa katundu wolemetsa kapena kugwedezeka, koma siyingathe kunyamula katundu wa axial.Msewu wakunja wa mphete wamtundu woterewu ndi wozungulira, kotero kuti kuyanjanitsa kwake ndikwabwino, ndipo kumatha kubweza cholakwika cha concentricity.

Tikudziwa kuti kukhudzana kutopa spalling kumachitika mu dzina ntchito ya kunja ozungulira kubala ndi mpando, ndipo nthawi zambiri limodzi ndi kutopa ming'alu.Choyamba, zimachitika chifukwa cha kukameta ubweya wambiri kumunsi kwa dzina lolumikizana, kenako ndikumakula kupanga mawonekedwe osiyanasiyana, monga madontho.Kupukuta kapena kupukuta, kupukuta mu tinthu tating'onoting'ono kumatchedwa shallow peeling.Chifukwa cha kukula kwapang'onopang'ono kwa spalling pamwamba, nthawi zambiri imafalikira mpaka pansi, kupanga kuphulika kwakukulu.

Abrasion effect imatanthawuza momwe kukangana kotsetsereka pakati pa mayina kumapangitsa kuti chitsulo chodziwika bwino cha dzina logwira ntchito chiwonongeke nthawi zonse.Zimbalangondo zozungulira zozungulira zimalumikizidwa ndi mayendedwe ozungulira ngati ng'oma pakati pa mphete yamkati yokhala ndi njira ziwiri zojambulira ndi mphete yakunja yokhala ndi mipikisano yozungulira.Zozungulira zozungulira zimakhala ndi mizere iwiri ya odzigudubuza, yomwe imakhala ndi katundu wambiri, komanso imatha kunyamula katundu wa axial kumbali iliyonse.Ndi mphamvu yonyamula ma radial yayikulu, ndiyoyenera kwambiri kugwira ntchito pansi pa katundu wolemetsa kapena kugwedezeka, koma siyingathe kunyamula katundu wa axial.Msewu wakunja wa mphete wamtundu woterewu ndi wozungulira, kotero kuti kuyanjanitsa kwake ndikwabwino, ndipo kumatha kubweza cholakwika cha concentricity.

Kuvala kosalekeza kumayambitsa kuwonongeka kwapang'onopang'ono kwa makina onyamula, ndipo pamapeto pake kumabweretsa kutayika kwa kulondola kwazithunzi ndi zovuta zina zofananira.Ma tapered wodzigudubuza ndi mayendedwe olekanitsidwa.Mphete zonse zamkati ndi zakunja za chimbalangondo zili ndi mipikisano yothamanga.Mtundu woterewu umagawidwa kukhala mzere umodzi, mizere iwiri ndi mizere inayi yodzigudubuza molingana ndi chiwerengero cha mizere yomwe inayikidwa.Kuvala kungakhudze kusintha kwa mawonekedwe, kuwonjezeka kwa kusiyana kofananira ndi kusintha kwa mawonekedwe a ntchito, kungakhudze mafuta odzola kapena kuwapangitsa kuti asokonezeke pamlingo wina, kuchititsa kuti ntchito ya mafuta ikhale yotayika kwathunthu, kotero kuti imataya kulondola kwa kasinthasintha ndipo ngakhale simatha kuthamanga modabwitsa.Wear effect ndi imodzi mwazinthu zodziwika bwino zama mayendedwe osiyanasiyana.Malingana ndi momwe mavalidwe amakhalira, nthawi zambiri amatha kugawidwa m'magulu ambiri a abrasive ndi kuvala zomatira.